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Add loop operator in fcode #889

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zxq9 wants to merge 27 commits from loop-op into master
pull from: loop-op
merge into: QPQ-AG:master
Conversation 3 Commits 27 Files Changed 2 +14 -15
1 changed files with 14 additions and 15 deletions
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src/aeso_ast_to_fcode.erl
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@ -662,22 +662,21 @@ expr_to_fcode(Env, _Type, {app, _, {'..', _}, [A, B]}) ->
)},
Loop;
expr_to_fcode(Env, _Type, {app, _, {'..', _}, [A, B]}) ->
AV = fresh_name(),
BV = fresh_name(),
WithA = fun(X) -> {'let', AV, expr_to_fcode(Env, A), X} end,
BV = fresh_name(), % var to keep B
WithB = fun(X) -> {'let', BV, expr_to_fcode(Env, B), X} end,
St = fresh_name(),
It = fresh_name(),
Init = {tuple, [nil, {var, AV}]},
WithA(WithB(
{loop, Init, St,
{'let', It, {proj, {var, St}, 1},
make_if({op, '=<', [{var, It}, {var, BV}]},
{continue, {tuple, [{op, '::', [{var, It}, {proj, {var, St}, 0}]},
{op, '+', [{var, It}, {lit, {int, 1}}]}
St = fresh_name(), % loop state
ItProj = {proj, {var, St}, 1},
AcProj = {proj, {var, St}, 0},
Init = {tuple, [nil, expr_to_fcode(Env, A)]},
Loop = {loop, Init, St,
make_if(
{op, '=<', [ItProj, {var, BV}]},
{continue, {tuple, [{op, '::', [ItProj, AcProj]},
{op, '+', [ItProj, {lit, {int, 1}}]}
]}},
{break, {proj, {var, St}, 0}}
)}}));
{break, AcProj}
)},
WithB(Loop);
expr_to_fcode(Env, _Type, {list_comp, _, Yield, []}) ->
{op, '::', [expr_to_fcode(Env, Yield), nil]};
expr_to_fcode(Env, _Type, {list_comp, As, Yield, [{comprehension_bind, Pat = {typed, _, _, PatType}, BindExpr}|Rest]}) ->